Question

Qhuestion 6

i.Write a recursive function reverseConcatenate that takes as input a list with string entries and returns one long string which is the concatenation of all the string entries in reverse order. For instance, reverseConcatenate([’how’, ’are’, ’you?’]) should return ’you?arehow’.

Answer 1

Answer.)

Code: (Screenshot for proper indentation)

#define reverseConcatenate function def reverseConcatenate (1st): if len(1st) is 1: return 1st[-1] return 1st[-1] (reverseConcatenate (1st: len (lst)-1])) # Main Code 1st ["how", "are", "you?"] print("List is : ",lst) print("Expected Output : ",reverseConcatenate (1st))

#(Text version of the code from Student help)

#define reverseConcatenate function
def reverseConcatenate (lst):
if len(lst) is 1:
return lst[-1]
return lst[-1] + (reverseConcatenate (lst[:len(lst)-1]))

# Main Code
lst = ["how", "are", "you?"]
print("List is : ",lst)
print("Expected Output : ",reverseConcatenate (lst))

Output:

List is :  ['how', 'are', 'you?']                                                                                                                                                  

Expected Output :  you?arehow